pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8370-RestAndBeThankful.ps) >>/Users/jc/w/tmp/Tune-8370-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/RestAndBeThankful.abc

Error exit status 256; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_83700.log 276509 Log file, useful mostly for debugging
Coll_83701.log 338453 Log file, useful mostly for debugging
Form_83705.log 747 Log file, useful mostly for debugging
Form_83707.log 1501 Log file, useful mostly for debugging
Tune-8370-RestAndBeThankful.abc 417 ABC music file with the extracted tune(s)
Tune-8370-RestAndBeThankful.ps 34951 PostScript
Tune-8370-RestAndBeThankful.txt 417 Plain-text file with the extracted tune(s)
Tune-8370-get.log 4364 Log file, useful mostly for debugging
Tune-83700-get.log 41669 Log file, useful mostly for debugging
Tune-83701-get.log 3254 Log file, useful mostly for debugging
Tune-83702-get.log 99046 Log file, useful mostly for debugging
Tune-83706-get.log 0 Log file, useful mostly for debugging
Tune-83709-get.log 4973 Log file, useful mostly for debugging
These files should be available for 24 hours.